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An Overview of Military Jet Engine History 119 In early 1997, P&W received an EMD contract which, when added to earlier JSF engine contract money, amounted to a nearly $1 billion development effort. By that time, GE, Boeing, and Lockheed had set- tled on the YF120 as the baseline for development of a second engine for the JSF in what had now become the Alternate Engine Program (AEP).14 Rolls-Royce also now teamed with GE, mainly because of the British firm’s acquisition of Allison. Rolls-Royce’s share of the YF120 Advanced Technology Engine core development effort stands at 25 percent.15 The GE alternative engine is not expected to be available for com- petition with the P&W engine until the production of JSF Lot 7 com- mences in 2013. However, Congress has increased funding for the AEP in several annual budgets, and it is possible the GE engine could be available for procurement competition by 2010, or very early in the planned JSF production effort. The P&W and GE engine variants for JSF are expected to benefit from the ongoing research efforts taking place in the IHPTET program. Initiated in 1988, IHPTET is another ambitious government/industry technology development and demonstration program, which in- cludes the continuation of some earlier efforts mentioned earlier in this appendix. For example, in the interim between the YF120’s loss in the ATF competition and its entrance into the AEP for the JSF, the Air Force continued to work with GE through the IHPTET program to mature the YF120’s advanced technologies. IHPTET’s flagship goal is to double the thrust-to-weight ratio of military turbofans while re- ducing production and maintenance costs by 35 percent by 2003.16 IHPTET, which is half funded by industry and half funded by gov- ernment, is expected to eventually make possible the development of more-reliable next-generation engines with dramatically higher ______________ 14By that time, McDonnell Douglas had been eliminated from the competition. 15In addition, Rolls-Royce also plays a significant role in other aspects of the JSF propulsion system that are unassociated with the AEP. For example, Rolls is developing the lift fan mechanism for the Lockheed STOVL design and is developing nozzles and various other parts for the Boeing STOVL design. These efforts are contractor-furnished equipment outside of the government-furnished equipment P&W program and the government-furnished equipment AEP. 16See “Integrated High Performance Turbine Engine Technology...” (2001).PDF Image | Military Jet Engine Acquisition Technology Basics and Cost-Estimating Methodology
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